by a multi-byte character with a second byte of 0x5c (\). (Bug #8903)


sql/sql_lex.cc:
  Fix lex error when multi-byte character containing 0x5c (\) follows a
  backslash
mysql-test/t/ctype_sjis.test:
  Add regression test for Bug #8303
mysql-test/r/ctype_sjis.result:
  Add test results